​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Chesterton 14K Restrictor Bushings are designed for use in rotary equipment to form a barrier between the sealing device in the stuffing box or the pump impeller housing and the fluid in the mixing tank. The restriction produced reduces flush requirements and helps to prevent suspended abrasive particles from entering the stuffing box area.​